ECOTEST DKG-21 Operating Manual page 60

5.2.5 Verification should be performed in accordance with safety measures
presented in item 4.3.1 of the OM.
5.2.6 Verification conditions
Verification should be performed under the following conditions:
- ambient air temperature range within (20±5) °C;
- relative air humidity from 30 to 80 %;
- atmospheric pressure from 86 kPa to 106.7 kPa;
- natural background level of gamma radiation should not exceed
0.30 µSv/h;
- storage battery should be fully charged, storage battery voltage should be
not less than 4.1 V.
5.2.7 Verification procedure
5.2.7.1 External examination
5.2.7.1.1 During external examination the dosimeter should meet the
following requirements:
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